When a person wants something to happen so they phrase it as a joke or impossibility. Typically used to convince drunken friends into doing foolish things.
A: Boy it would be hilarious if someone jumped off the roof, but no one would be brave enough to do it.
a combination of sarcastic and attitude, that annoying attitude that a lot of girls have, unnecessary sarcasm, so sarcastic that you dont know when they are being serious or sarcastic.
boy: can i have a kiss
girl: yes boy: are you serious?
girl: yes